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CVE-2026-18495

Estado: Pendiente de análisisMedia (6.1)—

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Libtiff — LibtiffAILibtiff — Tiff2pdfAI

CWE

Referencias

JSON original (NVD)

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{
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          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
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          "version": "2.0.3",
          "timestamp": "2026-09-11T17:56:50.884605Z"
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  "published": "2026-09-11T18:16:56.690",
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      "url": "https://access.redhat.com/errata/RHSA-2026:53467",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-18495",
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531414",
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      "url": "https://gitlab.com/libtiff/libtiff/-/merge_requests/729",
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      "source": "secalert@redhat.com",
      "description": [
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          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption."
    }
  ],
  "lastModified": "2026-09-16T19:42:43.623",
  "sourceIdentifier": "secalert@redhat.com"
}